70
B
A
C
D
Fig. 65
0
1.
Switch off the gas condensing boiler ON/OFF
switch.
0
2.
Fold down heat management unit
A
. See
0
3.
Remove cover panel
B
.
0
4.
Close gas shut-off valve
C
.
0
5.
Loosen the screw in test connector
D
on the gas
train, do not unscrew. Connect the pressure
gauge.
0
6.
Open gas shut-off valve
C
.
0
7.
Switch on the gas condensing boiler ON/OFF
switch.
0
8.
Check the supply (flow) pressure.
Set value: 20 mbar (2.0 kPa)
If the set value is exceeded, take steps according
to the table on page 71.
Note
Use a suitable measuring device with a resolution
of at least 0.1 mbar (0.01 kPa) to check the supply
pressure.
0
9.
Record the actual value in the report on
page 162.
10.
Shut down the appliance and close the gas shut-
off valve. Remove the pressure gauge and tighten
the screw in test connector
D
.
11.
Open the gas shut-off valve and start the appli-
ance.
Danger
Gas escaping from the test connector leads
to a risk of explosion.
Check test connector
D
for gas tightness.
12.
Fit cover panel
B
.
Commissioning, inspection, maintenance
Measuring connection pressure (flow pressure)
(cont.)
5853335